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CG-5GT Periodic Error Test Results

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#1 Patrick

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Posted 03 January 2009 - 11:48 AM

I spent some time running PE tests on my newly acquired CG-5GT mount last night. I wanted to see how bad (or good) the PE was on a new, out of the box CG-5GT mount. I was using my C6 SCT and a Philips SPC900NC camera to record the data in K3CCDtools. I ran the recorded data files through PEAS software to generate the graphs. Temperatures last night were in the 20 deg F range.

Some of the data I've seen in the past for the CG-5GT has shown a lot more PE, so I was pleased with the results.

I had three runs...here they are:

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#2 Patrick

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Posted 03 January 2009 - 11:49 AM

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#3 Patrick

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Posted 03 January 2009 - 11:49 AM

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#4 mclewis1

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Posted 03 January 2009 - 12:40 PM

Less than 20 arc sec peaks and the changes don't look too abrupt ... that should be a good mount to autoguide with.

#5 nofxrx

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Posted 03 January 2009 - 02:57 PM

I agree..this is a VERY smooth PE line...
I have an ASGT as well and have only had problems with backlash on it..other than that I have no problems with AG it!!
Great job Patrick!Thanks for sharing this..now I am wondering what mine is like :question:

#6 rmollise

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Posted 03 January 2009 - 05:18 PM

I agree..this is a VERY smooth PE line...
I have an ASGT as well and have only had problems with backlash on it..other than that I have no problems with AG it!!
Great job Patrick!Thanks for sharing this..now I am wondering what mine is like :question:


Most of 'em are in this neighborhood: easy to autoguide, but you will need to guide if you are doing exposures longer than about 20 seconds. Keep 'em properly balanced and they just work. ;)

#7 islandsteve11

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Posted 03 January 2009 - 08:23 PM

Thanks, Patrick! :bow: I'm looking forward to using an autoguider with my CG5-ASGT.


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